Filter



Dec. 8 1925- GRIFFIN FILTER Filed June 20, 1923 INVEINTOR. 6

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Patented Dec. 8, v

UNITED STATES 1,564,666 PATENT'T orrrcr...

JOSEPH FRANCIS GRIFFIN, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE SUPER-HEATER COMPANY,

OF NEW YORK, N. Y.

FILTER.

Application filed June 20, 1923. Serial No. 646,716.

To all whom it may concern Be it known that I, JOSEPH FRANCIS GRIFFIN,citizen of the United States, and resident of Brooklyn, in the county ofKings and State of New York, have invented new and useful Improvementsin Filters, of which the following is a specification.

This inventionrefers to filters, particularly those used in connectionwith locomotrve feed water heaters.

The object of the invention is to provide a new filtering apparatus ofthis kind which shall be eificient as a filter, not too expensivein'construction, readily assembled and dismantled, easily cleaned, ofsuflicient capacity to meet allthe requirements of the serviceandrugged. enough in construction to withstand the usage it IS apt toget. While the invention has particular reference to filters for theservice spoken of, yet-it will be obvious that the apparatus will beuseful also in other While, therefore,'I describe the apparatus asinstalled and used on a tender in a locomotive, this is not to beinterpreted as being by way of limitation.

The invention is illustrated in a single figure in the accompanyingdrawing, this figure being a vertical central section. I

The filter is setdirectly .on the upper sheet 1 of the water space of atender and eidzends through an opening 2 in said sheet into the waterspace, so that the filtered liquid falls directly into the tank. The

filter comprises a housing or casing 3 which is generally cylindrical inshape, having a shoulder both internally and. externally at 4 and acircumferential flange somewhat below its middle at5. This flange 5rests on the sheet 1, to which it is secured by means of the bolts 6.The housing is closed at the 'top by a lid or cover 7 between which andthe housing there is a gasket 8. The lid can be held in place by anypreferred means but this should be of such a nature that it can bereadily removed.

Within the lower cylindrical part of the housing 3 are located the threecylindrical elements 9, 10 and-11. These are nested one within the otherand are each perforated as shown at 12. .At their ends there arestiffening rings 13. The filtering proper is per element 9, down betweenthe outer and middle elements around the lowerend of the middle element,upward between the middle and inner-elements, over the top of the innerelement, down on its'inside and over the lower ends of all threeelements. I

The three elements 9, 10 and 11 hear at their lower ends on the plate orhead 15 while their upper ends preferably come into engagement with agasket 16 made of any suitable material when the filter is completelyassembled. -Against the upper side of this gasket 16, if one is used,bears the plate '17. The two heads 15 and 17 are perforated at theircenters and a bolt 18 extends through both of them at this point, thehead of which bears against the upper up too far and buckling theelements 9, 10

and 11. When the nut 19 is completely pulled up the-upper ends of theelements 9, 10 and 11 will bear against the gasket 16.

The upper head 17 is perforated at 22 and has riveted to it a spring 23which bears against the inside of the lid or cover 7 whereby the plate17 is held against the shoulder 4.

The lower head 15 has a deep depression 24 which is provided to holdsolid matter filtered out of the water assing through the filter, suchsolid matter ropping downward from the inside of the inner element.

The wallo'f the housing 3 is provided at 25 with an opening forattaching the'pipe supplying the water to be filtered. In the aplication to locomotive feed water heaters th1s water is the condensatefrom the feed water heater, that is, the condensed exhaust from the mainengine which has heated the feed water in the feed water heater. Anumber of inwardly turned feet 26 are provided at the bottom of housing3-, which prevent the bottom head 15 and the element 12 together withthe filtering cloth from falling into the water space of the tank if nut19 should become unscrewed or bolt 18 should break.

' The operation of the device will be obvious from the above descriptionand needs no detailed statement. The water to be filtered enters thecentral space, seeps through the several layers of the filtering clothand the elements 12, and flows out at the bottom of the casing into thetank. It will be noted that it is a very easy matter to open the filtercasing and remove the entire inner structure comprising the upper andlower plates and the three filter elements, in which after which theportions removed can be quickly dismantled, the cloth 14 removed andreplaced by a new one,- and the entire apparatus cleaned andreassembled. It is unnecessary, as will be noted, to remove the housingor casing 3 from the tender for this purpose.

What I claim is:

1. In apparatus of the class described. the

and resilient means engaging the lid and the top plate and keeping thelatter in engagement with the ledge.

2. In apparatus of the class described, the combination of a waterreservoir a cylindrical filter housing extending through its top andprovided with an interior annular 4 ledge near its upper end, acylindrical filter removal the s ,I'IIIO 23 serves as a handle' Withinand spaced from the Walls of the housing, plates closing top and bottomof said filter, means to admit liquid to the top of the filter, theupper plate resting on said ledge and being apertured to admit theliquid to the inside of the filter, a lid secured to and closing theupper end of the housing, resilient means engaging the lid and the upperplate and keeping the latter in engagementrwith the ledge, and meansrigidly connecting the upper and lower plates, the lower plate beingspaced from the housing and having a central depression to form a spacefor holding solidswhich have been filtered out.

JOSEPH F. GRIFFIN.

